Abstract: A metallic ring rotating about a horizontal axis is parted by a cutting edge of a parting tool presented to the surface of the workpiece below its center of rotation. The parting tool is subjected to substantially constant high pressures which minimize chatter, vibration and shock. Vibrations generated during heavy duty operations are minimized by the additional step of supporting the toolholder with side plates.

Abstract: A machine cutting tool comprising a holder into which replaceable cutting inserts may be inserted in a self-gripping manner. The holder and cuttng inserts each have two contact surfaces opposite each other of an approximate circular form about the center of rotation of the cuttng insert. When in working position, the contact surfaces are developed complementary to one another and provided with guides. The cutting insert can be inserted into the holder with its narrow side and can be securely locked by turning it in the direction of the force acting on the cutting edge during operation. A detachment of the cutting insert during operation is impossible. The cutting insert preferably has two diametrically opposite cutting edges.

Abstract: A multi-bladed tool system for use with automatic bar lathes and screw machines is disclosed. Parting and chamfering blades are claimed in an elongated holder in predetermined spaced relationship according to intended workpiece configuration by spacer elements and a set screw driven clamping jaw. The blades may extend through the length of the holder so that both ends of the blades may be used by reversing the holder. The blades are trapezoidal in cross section to provide for adequate transmission of clamping forces to all the blades.

Abstract: A support blade for a cutting tool insert is disclosed featuring a unitary clamping arrangement for the insert actuated by a camming member permanently positioned in the blade.

Abstract: A cutting insert for use in a deep grooving tool is formed from an elongated generally rectangular block of cutting material having a cutting end. The insert includes a straight cutting edge, disposed perpendicular to the longitudinal axis of the insert and is defined by the juncture between one side edge of the cutting end and the leading surface of the insert. The leading surface of the insert, which is configured for controlling chips, includes a V-shaped ridge, spaced from the cutting edge and oriented such that the apex portion thereof is disposed closest to the cutting edge. The leading surface of the insert further includes a groove, which is contiguous with the V-shaped ridge, and extends towards the cutting edge. In one preferred embodiment of the subject invention, the groove is substantially planar in configuration and extends to and is contiguous with the cutting edge.

Abstract: A tool holder for grooving and parting machining operations and the like having a cutting insert received on a support plate carried by a tool body. Recesses in the bottom and rear edges of the support plate bear on support pins pressed into the body and the support plate is retained in engagement with the pins and a side face of the body by a screw extending through a hole in the plate and threaded into the body. A clamp carried by the body bears on the cutting insert to retain the insert in a seat on the plate.

Abstract: An arrangement for holding a cutting tool is detachably fastened to a receiving member on the left or right side or turned 180.degree.. The arrangement includes a support and a clamp for firmly mounting at least one exchangeable cutting tip; for this purpose, in one embodiment, the support has a longitudinal groove and the clamp has a longitudinal serrated edge which extends into said groove.In order to hold the cutting tip even more exactly in place, the clamp has a serrated edge which engages in a shape-mating connection in a slot arranged on the rear face of the cutting tip.These tools are used especially as recessing tools on lathes.

Abstract: The invention relates to a cutting tool especially useful for cut-off, threading and grooving operations. The tool includes a massive block-like body with serrations along one or both sides. An adjustable plate with interengaging complemental serrations is mounted on the side of the body and retained by bolts which transfix the plate and anchor in the body. The plate has a top recess to receive short cutting elements backed up by a similarly shaped rod. A broached out-of-round hole is cut into the body parallel to the serrated wall to receive at one end a threaded anchor nut and at the other end a shank of a clamp bar.

Abstract: A tool holder is provided for the cross slide of a lathe. A cutoff tool extends horizontally from the holder toward the rotational axis of a workpiece in the lathe, and a chamfering tool extends vertically downwardly from the holder in a common cutting plane with the cutoff tool. As the cutoff tool is advanced radially into the workpiece to cut a portion off the end thereof, the chamfering tool is thereby moved chordally with respect to the peripheral edges of the annular groove being formed in the workpiece by the cutoff tool. The cutting edges of the chamfering tool are preferably spaced from the cutoff tool such that they engage the groove edges during the cutting of the groove and complete the chamfering thereof prior to completion of cutoff.

Abstract: Disclosed is a cutting tool constructed entirely of a carbide material. The cutting tool is designed such that the front face is beveled to form a cutting edge along a top front end of the tool. Elongated sides of the tool between top and bottom surfaces converge along two different axes so as to converge in directions away from the cutting edge. This converging design provides the cutting edge at the widest portion of the tool even after the tool has been used and sharpened repeatedly.

Abstract: A method and apparatus for cutting a transverse slot about a bore of smaller diameter than that of the slot are disclosed. The invention consists of introducing a cutting head facing transversely to the bore, through the bore opening its distance from the mill shaft being progressively extended by the addition of spacers between the head and the shaft until the desired slot depth is obtained. The spacers are held in position by a cable passing from the cutting head through the series of spacers and out along the mill shaft. The mill shaft carrying the cutting head is moved transversely into the object wherein the slot is being cut as the object is being rotated thereabout by the mill table to which it is affixed.

Abstract: A lathe tool holder has a straight supporting arm and a clamping outer end formed by slotting the outer end in a horizontal central plane to define clamping jaws having opposed dovetail portions which when urged together by a clamping screw grip a resilient tool bit adapter having sides compressible by the jaws to grip a tool bit. Different tool bit adapters are used having socket-like bit-receiving openings which are either parallel to the plane of the slot in the holder or inclined with respect thereto, depending upon the type of work or direction of cut. A drilled hole extends vertically entirely through both jaws, and is tapped to form threads therein which lie on a nominally continuous helix, to receive the clamping screw. The clamping screw is threaded at its end remote from the head for a length which does not exceed the thickness of a single jaw.

Abstract: In slotting tools with exchangeable cutting inserts the insert is adapted to be clamped between two narrow jaws situated exactly above each other in the front end of a holder the lower jaw of which is formed integrally with the holder and defines the cutting seat. The upper jaw, the front portion of which reaches outside the principal part of the holder, consists of a loose member which is adapted to be inserted in a recess in the principal part of the holder, behind the cutting seat of the lower jaw, and is locked against lateral displacement. This loose member is retained in its position in the recess exclusively because of the tightening effect provided between the jaws over the clamped cutting insert.

Abstract: A cutting tool which may comprise: an elongated bar member having a wedge-shaped recess at one end thereof; a wedge-shaped anvil member rigidly and removably fastened in the wedge-shaped recess of said bar member, having an elongated recess in which a cutting insert may be received; and a clamp member removably fastened to the bar member for rigidly clamping the cutting insert in the elongated recess.

Abstract: A cutting tool which may comprise: an elongated bar member; an anvil member removably fastened to one end of the bar member and having an elongated recess in which a cutting insert may be received; and a clamp member removably fastened to the anvil member for rigidly clamping the cutting insert in the elongated recess. The elongated bar member and anvil member may be provided with cooperating key and keyway by which the anvil member is at least partially affixed to the bar member in a predetermined rigid position.

Abstract: An indexable insert for cutting internal and external grooves in a workpiece is adapted for mounting and securing upon a tool holder having a pocket therein; whose bottom edges define an obtuse angle. The insert comprises an elongated body of rectangular cross section having a flat top surface along one edge of the body and a pair of angular bottom surfaces extending from a central point of the body and inclined toward and extending to said top surface at a corresponding included obtuse angle. These inclined surfaces define a pair of separately usable transverse cutting edges at the opposite ends of said body which is adapted for snug registry within said pocket. Said pocket also defines within the tool holder a back up plate against which the insert bears. The insert, one or more, is held down within said pocket by a clamp which bears across the top edges of said inserts. A cam lock device is also mounted upon said holder to apply lateral pressure to the insert holding it snugly against the back up wall.

Abstract: A cup-shaped wheel having an abrasive rim is employed to grind the teeth of a circular saw to an improved contour. Only point or edge contact takes place between the abrasive rim and the tooth. This technique is preferably utilized in conjunction with triple-chip type circular saws of the sort used to cut metals such as steel. The contour imparted to the cutting surface of the tooth comprises a section of an elliptical cylinder and exhibits improved steel cutting characteristics when compared to prior art multi-faceted saw teeth. Since only edge contact takes place between the abrasive rim and the tooth, the wheel is essentially self-dressing.